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// SPDX-License-Identifier: GPL-2.0
/*
* Simple memory interface
*/
#include "compiler_attributes.h"
#include "linux_types.h"
#include "kmem.h"
#include "defs.h"
static void *kmem_alloc(size_t size)
{
void *ptr = malloc(size);
if (ptr == NULL)
sys_errmsg("malloc failed (%d bytes)", (int)size);
return ptr;
}
static void *kmem_zalloc(size_t size)
{
void *ptr = kmem_alloc(size);
if (!ptr)
return ptr;
memset(ptr, 0, size);
return ptr;
}
void *kmalloc(size_t size, gfp_t flags)
{
if (flags & __GFP_ZERO)
return kmem_zalloc(size);
return kmem_alloc(size);
}
void *krealloc(void *ptr, size_t new_size, __unused gfp_t flags)
{
ptr = realloc(ptr, new_size);
if (ptr == NULL)
sys_errmsg("realloc failed (%d bytes)", (int)new_size);
return ptr;
}
void *kmalloc_array(size_t n, size_t size, gfp_t flags)
{
size_t bytes;
if (unlikely(check_mul_overflow(n, size, &bytes)))
return NULL;
return kmalloc(bytes, flags);
}
void *kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *p;
p = kmalloc(len, gfp);
if (p)
memcpy(p, src, len);
return p;
}
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